Thread-parting mechanism for looms.



No. 677,096. Patented June 25,190I. J. H. NDRTHROP. THREAD PARTING MECHANISH FDR LOOMS.

(Applicatidn filed Mar. 28, 1901) 2 Sheets-Sheet I.

(No Model.)

s Incas co.. (mm-no.4 mamasrcm u. c.

Patented lune 25, min.

J. a. summer. THREAD PARTING MECHANISM FOR LOOKS;

' (Application filed mar. 23, 1901.) (No Model.) 2 Sheets-Sheet 2.

.iA ns H. non'rnnor; or TUsTIN, CALIFORNIA, ASSIGNOR TO 'DRAPER con- PANY, OF PORTLAND, MAINE, AND HOPEDALE, MASSACHUSETTS.

THREAD-PARTING MECHANISM son LOOM'S.

' SPECIFICATION forming part of'Letters Patent No. 677,096, dated June 25, 1901. V

Application filed March 23, 1901. Serial No, 52,493. (No model) I To all whom, it natty concern..-

Be it known that 1, JAMES H. NORTHROP, a citizen of the United States, residing at Tustin, in the county of Orange and State of Cali-.

fornia, have invented an Improvement in Thread-Parting Mechanism for Looms, of which the following description, in connection' with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates more particularly to looms provided with automatic filling-rep1en ishing mechanism to furnish a fresh supply of filling when the shuttle-filling has failed or become exhausted to a predetermined extent, a loom of such a type .being shown in United States Patent No. 641,763, dated Jannary 23, 1 900. Insaid patent means are shown for parting the end of old filling. between the edge of the cloth and the shuttle when the newsupply of filling istransferred, a thread-cutting temple severing the thread adjacent the edge of the cloth while a second thread-parting device acts near the shuttle, the piece of filling thus severed beingengaged and pulled out of the way by athread-clamp, the latter acting also to bring the filling end into position to be severed by the thread-cutting temple.

My present invention has for its object the features of my present invention in normal position. Fig. 2 is a top or. plan view-of the novel mechanism shown in Fig. l partly broken out, but in position just before parting the thread near the shuttle. Fig. 3 is a detached view, in side elevation and partly broken on t, of the thread-holder. Fig. 3 is a. cross-sectional view thereof on the line as w,

' Fig. 3. Fig. 3 is a side view of the gravitypresser, and Figs. 4 and 5 are side and front elevations of the thread-cutting temple.

I have herein shown the lillingparting means as operative only when the shuttle is properly boxed, the th read-parter being illus} trated as mounted on a shuttl'e'feeler.

The loom-frameA, breast-beam A, the lay a and are all substantially as shown in the United States patent referred to.: As in said patent, the end f of thetransferrer'carries a spring-controlled rocker-stud m, having-an arm m and alateral lug m, the arm -l)eing-provid'ed wit-ha notched dog m, to be engaged by a hunter 0 on the lay when a change of filling is to be eifected. A bracket A on the-- loom side has longitudinally secured to it a" lateral stud 'a, on which isrotat-ably mounted the sleeve-like hub got an upturned and rearwardly-bent arm or support Y, the bent upper end Y thereof constituting a; shuttle- Y feeler to move across the shuttle-race at the entrance to the shuttle-box, it the shuttle is properly boxed, in well-known manner, and x y on the support Y and the thread-holder to position the latter relatively to the support. At its extremity theEfeeler Y is notched,'as at 3, (see dotted lines, Fig. 1,) and a fixed cuttingblade 0 issecured on the feeler at the" upper side of the notch, while the second cotiperac. 9o ingv cutting-blade c is pivotally mounted on, the feeler at the lower side of the notch, the blade 6 being f ulcrumed on a stud 4 and normally held open by aspring 8*, (see Fig-2,) surrounding the stud and attached at one end 5 to a collar 5, fast on the latter, the other end of the spring acting upon the blade 0 to normally maintain'itopen in the position shown in Fig. 1, the spring being inclosed' by a sleeve-like shell 6. The rear endof the blade is provided with a segmental slot 0*, through which is fasten ed a pin? on the feeler to limit the swinging movementof the blade, the latter being closed by engagement of an upturned finger forming a part thereof, with any suitable actuating device on the lay, herein shown as the top or guard R of the shuttie-box. I

The thread-holder comprises two relatively fixed and elongated jaws h h, Figs. 3 and 3,-

, nally slotted. along its under side at b to receive loosely therein the gravity'presser 71.

, shown as an elongated bar of metal, beveled or rounded at hf at its end nearest 'the en-' trance to the jaws and normally resting by its weight on the lower jar. An upturned lug its on the presser loosely enters a hole h in'tho' upper jaw to prevent longitudinal displacementof the presser. A detent 7L7, shown as a rearwardly-turned open hook, is secured tothe lower jaw near its outer end fora pu-rpose 'to be described. A stud g on the support Y is extended laterally from the outer side thereof to receive thereupon the long hub 'n of a finger n, which is extended upward and forward to rest upon the lug m, hercinbefore referred to, a nut n screwed upon the end of'the stud 3 tightly holding the finger in place on the stud and immovable relatively to the arm Y.

Referring to Fig. 2, a pin 12 is shown in dotted lines as extended through the enlarged end of the sleeve 3 into the boss 2 to prevent any aocidental rotation of the sleeve,

1 and, furthermore, the pin 8, which holds the jaws of the thread-holder from relative movement, is also preferably fastened into the adjacent end of the sleeve 11 An ofiset foot y at the lower end of the support Y is adapted to engage a stop a on the bracket A when the. support is swung ihto position to enable the thread-holder and thread-parter to operate, as will be described.

I have herein shown'the operating or controlling rock-shaft cl as having fast upon it an arm 1:1 which at its inner end forms a jaw-like portion @1 and a relatively movable jaw (Z is fulcru med at (Z on thesaid arm (1, the movable jaw having an extension (1 beyond its fulcrum, said extension being connected to one end of a strong spring S, which is at its lower end secured to a stud on the loom-frame,the normal tendency of the spring being to hold the jaw d closed against the arm (1 in the position shown in Fig. 1, and also acting through the arm d to maintain the rock-shaft d in its normal position, the

arm (Z and jaw d having opposed stop-faces 2O 22, respectively. A pin on the support- Y, eccentric to its fulcrum a, is extended between the jaw portion (1 and jaw (1, so that the spring S is operative to maintain the shuttle-feeler, the support Y, and the various parts carried thereby in the position shown in Fig. 1.

A thread-cutting tem ple 6 forming the subject matter of United States Patent No. 585,465, dated June 29, 1895, is herein shown, the movable member 0 of the temple cutter cotiperating with a fixed member or blade a, the said movable member being hooked and operating as in the patent referred to when the filling end is brought against the fixed blade by the movement of the thread-holder, to be described, after which the movable memher 0 is operated at the forward beat of the lay to draw the filling against the blade a and sever it. The temple as a whole is indicated at T and is mounted in usual manner adjacent the selvage of the cloth.

Referring to Fig. 2, it willbe noted that the thread-holder is located between the temple and the thread-partner, comprising the blade c c, and that the latter is when in operative position adjacent the end of the sh uttle in the shuttle-box.

In the operation of the apparatus when the rock-shaft d is rocked in the direction of the arrow 50, Fig. 1, as'it will be when a change of filling is to be elfected, the arm (Z will be raised against the action of the spring S and the support Y and parts carried thereby will be swungrearwardly on the fulcrum a to bring the shuttle feeler into a position to feel the shuttle as the lay heats up, and at the same time the movement of the finger 'n will permit the spring-con trolled rocker-stud m to 1'0- tate sufficiently to move the dog M into position to be engaged by the hunter 0 as the lay completes its forward beat, and the transferrer f will be operated in well'known mannor to provide a sufficient supply of filling and to eject the old or spent supply from the shuttle. At the time such old supply is ejected the filling end 15* (see Fig. 2) will extend from the edge of the cloth to the shuttle, and when the thread-holder and thread parter are moved into operative position, as has been, described, this filling end will enter betweenthe open jaws c c of the parter and it will also pass into the opening between the jaws h h of the thread-holder and underneath'the gravity-presser h the weight of thelatter holding the thread between it and the top of the lower jaw h. As the forward movement of the lay is completed the top or guard R of the shuttle-box will engage the upturned extension 0 and close the blade 0' to sever the thread adjacent the shuttle, it being. remembered that the thread is at such time held in the thread-holder. The change of filling having been effected, the lay moves back and the support Y resumes its normal position, (shown in Fig. 1,) brought back thereto by the action of the spring S and such movement of the thread-holder draws the filling end i into position to be engaged by the hooking member 0 of the temple cutter and at the next forward beat of the lay the temple cutter will be actuated to sever the filling end. The piece of filling thus cutout between the-clothand the shuttle is retained in theholder by the weight of the gravity-presser h, and as the loom continues to run the constantjarring or vibration of the presser as it is loosely held will gradually work the piece 0tthread downwardtoward the lower endof the presser," and when the thread finally passesfrom be across the race of the lay to bring the threadparte'rand thread-holder into operative position, and at such time the jaw d may give sufficiently, if necessary, to prevent any smashing of the parts, the connection between the arm (Z and the support Y being thus of a yielding character.

By the construction shown I obviate the use of a separate spring to swing the shuttle feeler into operative posi tion.

When the filling end passes into the holder between the lower jaw and the presser, it passes beyond the hook-like detent h and the latter prevents any accidental withdrawal of the thread from the holder as the latter moves back into central position.

Having fully described myjuvention, what:

Iclaim as new, and desire to secure by Letters Patent, isa 1. In a loom provided with mechanism for automatically replenishing the filling, means operative upon changeof filling to partthe threadof the old supply of filling, adjacent v the cloth and-the shuttle, respectively, controlling means for the replenishing mechanism, and a thread holder movable by or through the operation of such means to engage the thread between the points at which it is to be parted, theholderincludinga gravity-controlled presser and a support on which it is loosely mounted, jarring of the presser inthe-operation of the loom eventually releasing the parted piece'of thread.

- 2. In a loom provided with'mechanism for automatically replenishing the filling, means operative upon change of filling to part the thread of the old supply of filling adjacent the cloth and the shuttle, respectively, controlling means for the replenishing mechanism, and a thread holder. movable. by or through the operation of such means to engage the thread between the points at which it is to be parted, said holder including an elongated support, a gravityresser loosely mounted thereon, and means to limit the movements of the presser, theweight of the latter retaining the parted piece of thread in the holder until released by the jarring of the presser.

3. In a loom provided with'mechauism for automatically replenishing the filling, means operative upon change of filling to part the threadof the old supply of filling adjacent the cloth and the shuttle, respectively, controlling means for the replenishing mechanism, and a thread holder movable by or through the operation of such means to en-- gage the thread between the points at which it is to be parted, the holder comprising two relatively fixed and slightly-separated jaws one above the other, and a gravity-pre'sser resting on the lower jaw and loosely held in.

place by the upper jaw, the thread passing.

between the lower jaw and the presser and being held by the weight of the latter until released by the jarring thereof.

4-. In apparatus of the class described,

'gthread-parting means, and a holderfto'engage the thread before the operation of said means,

said, holder comprising slightly-separated, and relatively fixed jaws two so perposed,

having flared ends, and a gravity-presser shorter than the jaws, resting upon the lower one and being limited in its movement by the upper one, the thread passing between the lower jaw and'the presser and held by the weight of the latter, the jarring of the presser acting to finally work the parted piece of thread toward the base of the jaws and beyond the adjacent end of the prcsser.

ICO

5. In apparatus of the class described,'

thread-parting means, and aholder to engage I.

the thread before the operation of said means, i

said holder comprising two superposed, slightly-separated and relatively-fixed jaws having flared ends, the upper jaw having a longitudinal recess in its under face, and a gravity-presser normally resting on the lower jaw and extended loosely into the said recess to be thereby maintained in operative position, the thread to be held passing between ITO the lower jaw and the presser and being held by the weight of the latter. I

6. In apparatus of the class described, thread-parting means, and a holder to engage the thread before the operation of saidineans,

said holder comprising two superposed,

the jaws, resting on the lower jaw and loosely retained in place by the upper one, the thread to beheld and parted passing between the slightly-separated and relatively fixed jaws j 'having flared ends, a gravity-presser between t r a thread-holder bodily movable with one of the parting devices, through the operation of the filling-carrier to be ejected adjacent the cloth and the shuttle, respectively, and a thread-holder movable by or through the operation of said controlling means into position to engage the thread between thethreadparters and maintain it in position to be parted, the thread-holder comprisinga grave ity-actuated presser and a' support upon which it is loosely mounted, the presser resting on the parted piece of thread and retaining it in theholder until released by the vibrations of the presser.

9. In a loom provided with filling-replenishing mechanism, controlling means therefor, a thread-cutting temple at the same side of the loom, a shuttle adapted to carry a supply of filling, a thread-holder and a threadparter movable upon change of filling into position to act upon the thread of the fillingcarrier to be ejected, said holder including a gravity-presser to engage the thread, and an actuator on thelay to positively actuate the thread-parter, the return of the thread-holder to normal position bringing the filling end into position to be severed by the temple cutter.

10. In a loom provided with filling-replenishing mechanism, a thread-cutting temple, a swinging support governed bysaid mechanism, a thread-holder and normally open parting-blades mounted upon the support, said holder including a gravity-presser to engage and hold the thread, a device on the lay to close the blades as they are bodily moved by the support into operative position, such movement of the support being effected upon actuation of the filling-supplying mechanism, and means to open the blades after severance of the thread, the return'of the threadholder to normal position bringing the filling end into position to be severed by the temple cutter.

11. In a loom provided with filling-replenishing mechanism, controlling means therefor, including a rock-shaft, a swinging"sup-' port, a thread holder and a thread -parter mounted thereupon, a lateral stud on the support, an arm fast on the controlling rockshaft, and having a jaw-like end, a cooperating jaw pivotally mounted on said arm, said part-s embracing the stud, and a spring to maintain the jaws normally closed, and-also to resist movement of the thread-parter and thread-holder into position to act upon the thread, rocking of the shaft, when a change of filling is to be efiected, overcoming the action of the said spring and moving the support to spring the holder and parter into operative position.

12. In a loom provided with filling-replenishing mechanism, a shuttle-feeler, normally open thread-parting blades mounted thereupon, a thread-holder mounted to move with the shuttle-feeler', and including a gravitypresser to engage and hold the thread, means to move the shuttle-feeler into operative position, prior to a change of filling, to thereby cause the thread of the filling-carrier to be ejected to enter and be held in the holder by the presser and to move the thread-parter into operative position, the lay and a hunter thereon to close the parting-blades and sever the thread'as the lay heats up.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES II. NORTHROP. 

